What does the cryptic crossword clue "Ken towed rubbish in plant (8)" mean?

The definition is "plant". The wordplay uses an anagram. anagram of KEN + TOWED = KNOTWEED; definition: "plant" The answer is KNOTWEED.

Ken towed rubbish in plant (8)

Daily Mail Cryptic #17487 | 4 Down | 2024-11-12 flower